Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas danças John Barnes teve?
 ###Tabelas: CREATE TABLE regular_season_and_post-season_games (regular_season_and_post-season_games_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Kicker VARCHAR, Kicking team VARCHAR, Opponent VARCHAR, Yards INT, Result VARCHAR, Game time VARCHAR) CREATE TABLE lner (lner_id AUTO_INCREMENT PRIMARY KEY, Class VARCHAR, Wheel Arrangement VARCHAR, Railway VARCHAR, Number at Doncaster INT, Number at Pyewipe INT, Number at March INT) CREATE TABLE list_of_contestants (list_of_contestants_id AUTO_INCREMENT PRIMARY KEY, Celebrity VARCHAR, Known for VARCHAR, Age INT, Professional VARCHAR, Series INT, Place VARCHAR, Dances INT, Highest score INT, Lowest score INT, Aggregate INT, Average VARCHAR) CREATE TABLE singles_7_titles_-_8_runner-ups (singles_7_titles_-_8_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent VARCHAR, Score VARCHAR) CREATE TABLE test_blasts (test_blasts_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Location VARCHAR, Elevation + Height VARCHAR, Delivery VARCHAR, Purpose VARCHAR, Yield VARCHAR)  
SELECT MIN Dances FROM list_of_contestants WHERE Celebrity = John Barnes